PONS词典中的例句（已经编辑处理）
- an undercover agent
单语范例（未经PONS编辑处理）
The matrix is a continuous layer of elongated fibre strands held together by a water-resistant bonding agent.
en.wikipedia.org Ideally, a customs agent could obtain a sampling of wood from a shipment of timber during the process of importation.
www.treehugger.com During this sting operation, he worked as an undercover agent.
en.wikipedia.org Thus, each agent can be represented by a characteristic fingerprint of cell-line responsiveness, indicated by the bar graph presentation.
en.wikipedia.org A kind verdict would call his upending of the secret-agent genre uproariously playful.
www.telegraph.co.uk